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Issue 11, 2019
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Fe3O4 nanoparticle decorated three-dimensional porous carbon/MoS2 composites as anodes for high performance lithium-ion batteries

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Abstract

Molybdenum disulfide (MoS2) is a promising anode material for lithium-ion batteries owing to its high theoretical capacity and low cost. However, it exhibits low electrical conductivity and volume expansion, resulting in poor electrochemical performance. In this work, three-dimensional porous carbon/MoS2 composites with Fe3O4 nanoparticles (C-MF) are synthesized via a mix–bake–wash method. The few-layered MoS2 in the porous carbon matrix provides improved electrical conductivity and facilitates lithium ion diffusion, so the composites exhibit a high specific capacity of 939.6 mA h g−1 on average at 0.1 A g−1 and a high rate capability (515.9 mA h g−1 at 5 A g−1). Moreover, the Fe3O4 nanoparticles in C-MF, which are anchored on the composites, improve the specific capacity and effectively mitigate diffusion of lithium polysulfides during cycling, resulting in remarkable cycling stability (590.1 mA h g−1 after 500 cycles at 2 A g−1). This work suggests that not only C-MF but also C@MoS2 with other metal oxides synthesized using this facile strategy have potential for energy-related applications.

Graphical abstract: Fe3O4 nanoparticle decorated three-dimensional porous carbon/MoS2 composites as anodes for high performance lithium-ion batteries

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Publication details

The article was received on 28 Dec 2018, accepted on 14 Feb 2019 and first published on 14 Feb 2019


Article type: Paper
DOI: 10.1039/C8NR10491C
Nanoscale, 2019,11, 4837-4845

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    Fe3O4 nanoparticle decorated three-dimensional porous carbon/MoS2 composites as anodes for high performance lithium-ion batteries

    Y. Jeon, J. Lee, M. Kim, J. Oh, T. Hwang and Y. Piao, Nanoscale, 2019, 11, 4837
    DOI: 10.1039/C8NR10491C

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